<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Get the Value of Text Input Field in JavaScript</title>
</head>
<body onload="getInputValue()">
<input type="text" placeholder="Type something..." id="myInput">
<button type="button" onclick="getInputValue();">Get Value</button>
<script>
function getInputValue(){
// Selecting the input element and get its value
var inputVal = document.getElementById("myInput").value = "122223222";
// Displaying the value
}
</script>
</body>
</html>